CN102508043A - Automatic testing system and method of dispersion characteristics of travelling wave tube slow-wave system - Google Patents
Automatic testing system and method of dispersion characteristics of travelling wave tube slow-wave system Download PDFInfo
- Publication number
- CN102508043A CN102508043A CN2011103102592A CN201110310259A CN102508043A CN 102508043 A CN102508043 A CN 102508043A CN 2011103102592 A CN2011103102592 A CN 2011103102592A CN 201110310259 A CN201110310259 A CN 201110310259A CN 102508043 A CN102508043 A CN 102508043A
- Authority
- CN
- China
- Prior art keywords
- slow
- measuring probe
- test
- wave
- dispersion characteristics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses an automatic testing system and method of dispersion characteristics of a travelling wave tube slow-wave system. The automatic testing system comprises a testing workbench, a servo control system of the testing workbench, a vector network analyzer and an IPC (industrial personal computer) with built-in testing software, wherein a fixing frame and a sliding disk are arranged on the testing workbench; a spiral slow-wave system and an energy coupler are fixedly arranged on the fixing frame; a measurement probe is arranged on the sliding disk; the energy coupler and the measurement probe are connected with the vector network analyzer; and both the vector network analyzer and the servo control system are connected with the IPC. The built-in testing software of the IPC is used for analyzing and processing the obtained data so as to obtain a relational graph among multiple parameters and further analyze the dispersion characteristics of the slow-wave system, besides, the reliability of the measurement results can be measured and tested repeatedly. The automatic testing system and method provided by the invention can achieve the effects that the testing accuracy and precision of the dispersion characteristics of the wave system can be improved, manpower and material resources can be saved and the like.
Description
Technical field
The present invention relates to a kind of automatization test system and method thereof, especially a kind of automatization test system of traveling wave tube slow-wave system dispersion characteristics and method thereof.
Background technology
Travelling-wave tube is to lean on continuously the speed of modulation electronics notes to realize the microwave tube of enlarging function.The slow wave system of travelling-wave tube is the core component of travelling-wave tube, and it is slack-off with electromagnetic phase velocity, and it is basic identical that it is dropped to the movement velocity of electron beam, lets the abundant positive energy exchange of electronics and electromagnetic wave, realizes that signal amplifies.Dispersion characteristics characterize electromagnetic phase velocity v
pAnd the relation between the frequency f (or wavelength X) is the key property parameter of slow wave system, and work has important directive significance to practical study.But, this direct representation electromagnetic wave phase velocity v
pWith the relation of frequency f (or wavelength X) be not easily sometimes, this method for expressing can not be directly the group velocity v of efferent echo
gAnd the relation between the wavelength X can not be understood group velocity v
gWith phase velocity v
pBetween relation, for statement more intuitively, dispersion characteristics adopt the method for expressing of Brillouin diagram here, are expressed as the relation between phase shift β and the frequency f.
The dispersion characteristics of measuring slow wave system at first institute's difficulty that will face are the influence of sniffer to the slow-wave structure characteristic itself, so how to get rid of various errors as far as possible, guarantee the precision measured, and the trustworthiness of raising measurement has just become a difficult problem that needs to be resolved hurrily.Legacy test system is adjusted the position of probe through the mode of manual adjustment, causes easily in the process of adjustment that the skew of probe location and location are inaccurate, and constantly traverse measurement brings sizable cumulative errors to subsequent calculations.Draw phase shift β and the frequency f curve needs lot of data, single displacement is short more, and measure dot number is many more, and test result is accurate more, and legacy test system can't guarantee such data volume, thus the out of true as a result that draws.
Summary of the invention
The present invention is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of automatization test system and method thereof of traveling wave tube slow-wave system dispersion characteristics is provided, to solve the existing coarse problem of test macro measurement result.
The present invention adopts following technical scheme for the technical solution problem.
The automatization test system of traveling wave tube slow-wave system dispersion characteristics, its design feature be, comprise test table and servo-control system thereof, vector network analyzer and in establish the industrial computer of testing software; Table top one end of said test table is set with the fixed mount that is fixedly connected with said test table, and the table top other end of test table is set with the sliding disc that can on test table, slide; Be set with helix line slow-wave system and energy coupler on the said fixed mount; Said sliding disc is provided with measuring probe, and an end of said measuring probe is fixed on the said sliding disc, and the other end of said measuring probe inserts within the cylindrical cavity that helix surrounded of said slow wave system as measuring sonde; Said energy coupler is connected with the test signal output port of said vector network analyzer through first cable; Said measuring probe is connected with the measuring-signal input port of said vector network analyzer through second cable; Said vector network analyzer all is connected with industrial computer with servo-control system.
The design feature of automatization test system of the present invention also is:
Said measuring probe comprises modular connection, cylindrical shape copper shell, insulation course, decay coating and the metal inner core of hexagonal (hexagon)nut shape; First end and the modular connection of said cylindrical shape copper shell are fixedly connected, and said metal inner core is located among the inner chamber of said cylindrical shape copper shell, and said insulation course is arranged between said metal inner core and the cylindrical shape copper shell; Said decay coating is arranged on the outer peripheral face of said cylindrical shape copper shell away from second end of modular connection; 2mm～5mm outside cylindrical shape copper shell and the insulation course is stretched out in the end of said metal inner core.
The present invention also provides a kind of method of testing, and its operation steps is following:
A. the fixed mount that is positioned at the test table two ends and the center of sliding disc are calibrated, made the center line of fixed mount and sliding disc be positioned on same the horizontal linear; Slow wave system and measuring probe are individually fixed on said fixed mount and the sliding disc; Measuring probe is stretched within the cylindrical cavity that helix surrounded of said slow wave system, make the measuring sonde of measuring probe be positioned at required measurement part;
B. start industrial computer; Connect the power supply of the servo-control system of test table; Industrial computer sends control signal through the multi-axis motion control card of its set inside to the servomotor of servo-control system, by the driven by servomotor test table of servo-control system;
C. move the testing software that is provided with in the industrial computer, import calibration file by testing software;
D. select phase place and amplitude measurement through testing software, the controlled variable of servo-control system is set; Controlled variable comprises motor stepping length and stepping number of times, electricity time-delay and smoothness etc.;
E. sliding disc moves on test table under the driving of servomotor, makes measuring probe moving axially along the helix of slow wave system; Measuring probe is every to reach a position, and industrial computer notice vector network analyzer carries out the measurement of the phase place and the amplitude of this position;
F. after each measurement was accomplished, vector network analyzer sent measurement data to industrial computer, and industrial computer receives data and storage, by the testing software in the industrial computer data of acquisition is analyzed and is handled, and obtains the dispersion characteristics parameter of slow wave system;
G. constantly move sliding disc, repeating step d～step f repeatedly carries out phase place and amplitude measurement in a plurality of positions; Obtain many group dispersion characteristics parameters; The dispersion characteristics of several groups of slow wave systems that obtain are compared, and draw dispersion characteristic curve, if the dispersion characteristic curve that is obtained is very approaching; Several groups of data are taken the mean, obtain chromatic dispersion data accurately and reliably; If the curve that obtains has off-set phenomenon, then carry out calibration, the measurement of test macro again.
In said step e, the test signal of the automatization test system of said traveling wave tube slow-wave system dispersion characteristics is sent by vector network analyzer, through test signal output port feed-in first cable, imports helix line slow-wave system into through energy coupler again; The measuring probe that gos deep into helix line slow-wave system carries out the measurement of the phase place and the amplitude of this position, and measuring probe is with the measuring-signal input port of measuring-signal through the second cable feed-in vector network analyzer.
Compared with present technology, beneficial effect of the present invention is embodied in:
(1) in the automatic test of traveling wave tube slow-wave system dispersion characteristics of the present invention; Owing to adopt servo-control system; The every feeding 0.01mm of test table, its positioning error can both be controlled in the 2 μ m, and traditional testing system can't be carried out the accurate measurement of feeding 0.01mm; The present invention has weakened effectively and has located the inaccurate error of bringing to measurement, has improved the accuracy of measurement of slow wave system dispersion characteristics.
(2) automatization test system of the present invention and method thereof can omnidistance each location points of record, the phase value of each frequency, provide dispersion map; Be convenient to search the data exception point; Carry out data screening simultaneously, accurately draw continuous phase shift β and frequency f curve, approximately need the phase data of 100 to 1000 location points of record; Each location point comprises the data of at least 200 frequencies, thereby has improved the degree of accuracy of measuring.And conventional test methods only depends on manpower and materials, writes down limited data, can't obtain accurate data result.
(3) the present invention is controlled whole test process and is carried out follow-up data processing by the testing software in the industrial computer; Saved great amount of manpower, and the various errors of strict control, the precision of measuring guaranteed; Improve the trustworthiness of measuring, be applicable to the measurement of slow wave system dispersion characteristics.
Automatization test system of the present invention and method thereof, effect such as have the test accuracy and the degree of accuracy that can improve wave system system dispersion characteristics, use manpower and material resources sparingly.
Description of drawings
Fig. 1 is the structured flowchart of test macro of the present invention.
Fig. 2 is the structural representation of the measuring probe of test macro of the present invention.
Fig. 3 is the master menu synoptic diagram of the testing software of test macro of the present invention.
Label in accompanying drawing 1～accompanying drawing 2: 1 test table, 2 servo-control systems, 3 vector network analyzers, 4 industrial computers, 5 fixed mounts; 6 sliding discs, 7 slow wave systems, 71 helixes, 8 energy coupler; 9 measuring probes, 91 modular connections, 92 copper shells, 93 insulation courses; 94 decay coating, 95 metal inner cores, 10 first cables, 11 second cables.
Below pass through embodiment, and combine accompanying drawing that the present invention is described further.
Embodiment
Referring to Fig. 1～Fig. 2, the automatization test system of traveling wave tube slow-wave system dispersion characteristics, comprise test table 1 and servo-control system 2 thereof, vector network analyzer 3 and in establish the industrial computer 4 of testing software; Table top one end of said test table 1 is set with the fixed mount 5 that is fixedly connected with said test table 1, and the table top other end of test table 1 is set with the sliding disc 6 that can on test table 1, slide; Be set with helix line slow-wave system 7 and energy coupler 8 on the said fixed mount 5; Said sliding disc 6 is provided with measuring probe 9, and an end of said measuring probe 9 is fixed on the said sliding disc 6, and the other end of said measuring probe 9 inserts within the cylindrical cavity that the helix 71 of said slow wave system 7 surrounded as measuring sonde; Said energy coupler 8 is connected with the test signal output port of said vector network analyzer 3 through first cable 10; Said measuring probe 9 is connected with the measuring-signal input port of said vector network analyzer 3 through second cable 11; Said vector network analyzer 3 all is connected with industrial computer 4 with servo-control system 2.
Said measuring probe 9 comprises modular connection 91, cylindrical shape copper shell 92, insulation course 93, decay coating 94 and the metal inner core 95 of hexagonal (hexagon)nut shape; First end and the modular connection 91 of said cylindrical shape copper shell 92 are fixedly connected, and said metal inner core 95 is located among the inner chamber of said cylindrical shape copper shell 92, and said insulation course 93 is arranged between said metal inner core 95 and the cylindrical shape copper shell 92; Said decay coating 94 is arranged on the outer peripheral face of said cylindrical shape copper shell 92 away from second end of modular connection 91; 2mm～5mm outside cylindrical shape copper shell 92 and the insulation course 93 is stretched out in the end of said metal inner core 95.Said modular connection, cylindrical shape copper shell, insulation course, decay coating and metal inner core are provided with coaxial mode, and metal inner core, insulation course, cylindrical shape copper shell and decay coating set gradually from inside to outside.
Test macro of the present invention and method; Can guarantee that measuring probe accurately measures the phase place of the axle center signal of slow wave system in the whole process of measuring; As far as possible little introducing reflection; The whole group of record measurement data is screened, is calculated and draw data, thereby can accurately draw traveling wave tube slow-wave system dispersion characteristics parameter.The measurement of traveling wave tube slow-wave system dispersion characteristics, in fact key is how to measure two amounts: axial phase-shift constant β and frequency f.The signal that is sent by the vector network analyzer signal source is divided into two ports: test signal output port and measuring-signal input port; The test signal output port connects the energy coupler of slow wave system test block through first cable; The measuring-signal input port connects measuring probe through second cable; Measuring probe gos deep into the center of the helix of slow wave system, can measure the signal phase of being drawn on this probe.The traverse measurement probe, reference position L1 measures the phase value of each frequency in the required frequency range
Move to position L2, measure the phase value of each frequency in the required frequency range
Phase-shift constant
β-f figure can be obtained, angular frequency (ω=2 π f), group velocity v can be obtained simultaneously
g 
With guide wavelength λ
g Relation,
With
The big more measuring accuracy of difference high more.
The test signal of the automatization test system of said traveling wave tube slow-wave system dispersion characteristics is sent by vector network analyzer 3, through test signal output port feed-in first cable 10, imports helix line slow-wave system 7 into through energy coupler 8 again; The measuring probe 9 that gos deep into helix line slow-wave system 7 carries out the measurement of the phase place and the amplitude of this position, and measuring probe 9 is with the measuring-signal input port of measuring-signal through second cable, 11 feed-in vector network analyzers.
The executive component of said servo-control system is a servomotor.Said test table 1 is fixed an end of the modular connection 91 of measuring probe 9 through sliding disc 6; Said test table 1 is provided with guide rail; The instruction control sliding disc 4 that servomotor sends according to servo-control system 2 moves on guide rail, and sliding disc 4 drives measuring probe and in helix line slow-wave system, moves.During practical implementation, servomotor is through leading screw and nut transmission, and the nut and the sliding disc that are sheathed on the leading screw are fixedly connected, and during the rotation of driven by servomotor leading screw, nut can drive disk to carry out straight line along guide rail and move.In the test process, the position of fixed mount is fixed, i.e. the stationkeeping of slow wave system.Sliding disc and measuring probe are under the driving of servomotor, along moving axially of the helix of slow wave system.Wherein, owing in advance the center of fixed mount and sliding disc is calibrated, thereby the center line of the center line of measuring probe and helix is located along the same line, and measuring probe moves along its axis at the center of helix.
The method of testing of the automatization test system of traveling wave tube slow-wave system dispersion characteristics comprises the steps:
A. the center of the fixed mount that is positioned at test table 1 two ends 5 and sliding disc 6 is calibrated, make the center line of fixed mount 5 and sliding disc 6 be positioned on same the horizontal linear; Slow wave system 7 and measuring probe 9 are individually fixed on said fixed mount 5 and the sliding disc 6; Measuring probe 9 is stretched within the cylindrical cavity that the helix 71 of said slow wave system 7 surrounded, make the measuring sonde of measuring probe 9 be positioned at required measurement part;
B. start industrial computer 4; Connect the power supply of the servo-control system 2 of test table 1; Industrial computer 4 sends control signal through the multi-axis motion control card of its set inside to the servomotor of servo-control system 2, by the driven by servomotor test table 1 of servo-control system 2;
C. move the testing software that is provided with in the industrial computer 4, import calibration file by testing software;
D. select phase place and amplitude measurement through testing software, the controlled variable of servo-control system 2 is set; Controlled variable comprises motor stepping length and stepping number of times, electricity time-delay and smoothness etc.;
F. after each measurement is accomplished; Vector network analyzer 3 sends measurement data to industrial computer 4; Industrial computer 4 receives data and storage; By the testing software in the industrial computer 4 data that obtain are analyzed and handled; Can draw
frequency plot graph of a relation,
position phase diagram, β-w phase constant and angular frequency graph of a relation, f-β frequency and phase constant graph of a relation, f-τ frequency and reduction gear ratio graph of a relation and Z-A position and magnitude relation figure, know the dispersion characteristics of slow wave system 7 according to these graphs of a relation;
G. constantly move sliding disc 6, repeating step d～step f repeatedly carries out phase place and amplitude measurement in a plurality of positions; Obtain many group dispersion characteristics parameters, the dispersion characteristics of several groups of slow wave systems 7 that obtain are compared, and draw dispersion characteristic curve; If the dispersion characteristic curve that is obtained is very approaching, several groups of data are taken the mean, obtain chromatic dispersion data accurately and reliably; If the curve that obtains has off-set phenomenon, then carry out calibration, the measurement of test macro again.
Fig. 3 is the master menu of the testing software in the industrial computer, accomplishes the analyzing and processing function of data by testing software, and draws each graph of a relation, thereby know the dispersion characteristics of slow wave system quickly and accurately, the performance of slow wave system is made accurately estimated.
Claims (4)
1. the automatization test system of traveling wave tube slow-wave system dispersion characteristics is characterized in that, comprise test table (1) and servo-control system (2) thereof, vector network analyzer (3) and in establish the industrial computer (4) of testing software; Table top one end of said test table (1) is set with the fixed mount (5) that is fixedly connected with said test table (1), and the table top other end of test table (1) is set with and can goes up the sliding disc (6) that slides at test table (1); Be set with helix line slow-wave system (7) and energy coupler (8) on the said fixed mount (5); Said sliding disc (6) is provided with measuring probe (9); One end of said measuring probe (9) is fixed on the said sliding disc (6), and the other end of said measuring probe (9) inserts within the cylindrical cavity that the helix (71) of said slow wave system (7) surrounded as measuring sonde; Said energy coupler (8) is connected through the test signal output port of first cable (10) with said vector network analyzer (3); Said measuring probe (9) is connected through the measuring-signal input port of second cable (11) with said vector network analyzer (3); Said vector network analyzer (3) all is connected with industrial computer (4) with servo-control system (2).
2. the automatization test system of traveling wave tube slow-wave system dispersion characteristics according to claim 1; It is characterized in that said measuring probe (9) comprises modular connection (91), cylindrical shape copper shell (92), insulation course (93), decay coating (94) and the metal inner core (95) of hexagonal (hexagon)nut shape; First end of said cylindrical shape copper shell (92) and modular connection (91) are fixedly connected; Said metal inner core (95) is located among the inner chamber of said cylindrical shape copper shell (92), and said insulation course (93) is arranged between said metal inner core (95) and the cylindrical shape copper shell (92); Said decay coating (94) is arranged on the outer peripheral face of said cylindrical shape copper shell (92) away from second end of modular connection (91); 2mm～5mm outside cylindrical shape copper shell (92) and the insulation course (93) is stretched out in the end of said metal inner core (95).
3. the method for testing of the automatization test system of the described traveling wave tube slow-wave system dispersion characteristics of claim 1 is characterized in that, comprises the steps:
A. the fixed mount (5) that is positioned at test table (1) two ends and the center of sliding disc (6) are calibrated, made the center line of fixed mount (5) and sliding disc (6) be positioned on same the horizontal linear; Slow wave system (7) and measuring probe (9) are individually fixed on said fixed mount (5) and the sliding disc (6); Measuring probe (9) is stretched within the cylindrical cavity that the helix (71) of said slow wave system (7) surrounded, make the measuring sonde of measuring probe (9) be positioned at required measurement part;
B. start industrial computer (4); Connect the power supply of the servo-control system (2) of test table (1); Industrial computer (4) sends control signal through the multi-axis motion control card of its set inside to the servomotor of servo-control system (2), by the driven by servomotor test table (1) of servo-control system (2);
C. move the testing software that is provided with in the industrial computer (4), import calibration file by testing software;
D. select phase place and amplitude measurement through testing software, the controlled variable of servo-control system (2) is set;
E. sliding disc (6) go up to move at test table (1) under the driving of servomotor, makes measuring probe (9) moving axially along helix (71) of slow wave system (7); Measuring probe (9) is every to reach a position, and industrial computer (4) notice vector network analyzer (3) carries out the measurement of the phase place and the amplitude of this position;
F. after each measurement is accomplished; Vector network analyzer (3) sends measurement data to industrial computer (4); Industrial computer (4) receives data and storage, by the testing software in the industrial computer (4) data that obtain is analyzed and is handled, and obtains the dispersion characteristics parameter of slow wave system (7);
G. constantly move sliding disc (6), repeating step d～step f repeatedly carries out phase place and amplitude measurement in a plurality of positions; Obtain many group dispersion characteristics parameters; The dispersion characteristics of several groups of slow wave systems (7) that obtain are compared, and draw dispersion characteristic curve, if the dispersion characteristic curve that is obtained is very approaching; Several groups of data are taken the mean, obtain chromatic dispersion data accurately and reliably; If the curve that obtains has off-set phenomenon, then carry out calibration, the measurement of test macro again.
4. method of testing according to claim 3; It is characterized in that; In said step e; The test signal of the automatization test system of said traveling wave tube slow-wave system dispersion characteristics is sent by vector network analyzer (3), through test signal output port feed-in first cable (10), imports helix line slow-wave system (7) into through energy coupler (8) again; The measuring probe (9) that gos deep into helix line slow-wave system (7) carries out the measurement of the phase place and the amplitude of this position, and measuring probe (9) is with the measuring-signal input port of measuring-signal through second cable (11) feed-in vector network analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103102592A CN102508043A (en) | 2011-10-13 | 2011-10-13 | Automatic testing system and method of dispersion characteristics of travelling wave tube slow-wave system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103102592A CN102508043A (en) | 2011-10-13 | 2011-10-13 | Automatic testing system and method of dispersion characteristics of travelling wave tube slow-wave system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102508043A true CN102508043A (en) | 2012-06-20 |
Family
ID=46220148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103102592A Pending CN102508043A (en) | 2011-10-13 | 2011-10-13 | Automatic testing system and method of dispersion characteristics of travelling wave tube slow-wave system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102508043A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444642A (en) * | 2016-12-15 | 2017-02-22 | 广州中国科学院先进技术研究所 | Slow wave module tube extrusion and detection controlling system and method |
| CN107005210A (en) * | 2014-11-03 | 2017-08-01 | 宝马股份公司 | Wave filter for the Electro Magnetic Compatibility of the component of the electrically driven that improves vehicle |
| CN107144739A (en) * | 2017-05-26 | 2017-09-08 | 电子科技大学 | Helical line slow-wave structure dispersion characteristics Auto-Test System and method |
| CN109144525A (en) * | 2017-06-26 | 2019-01-04 | 研祥智能科技股份有限公司 | A kind of software installation method and system of network self-adapting |
| CN113937557A (en) * | 2021-10-22 | 2022-01-14 | 陕西晟思智能测控有限公司 | Automatic butt-joint equipment of portable radio frequency cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB755834A (en) * | 1953-03-26 | 1956-08-29 | Standard Telephones Cables Ltd | Improvements in or relating to the coupling of a helix in a travelling wave tube or the like to a waveguide |
| US7019535B2 (en) * | 2002-09-16 | 2006-03-28 | Agilent Technologies, Inc. | Method and system for calibrating a measurement device path and for measuring a device under test in the calibrated measurement device path |
| WO2007143018A2 (en) * | 2006-05-31 | 2007-12-13 | The Dow Chemical Company | Microwave applicator equipment for rapid uniform heating of receptive polymer systems |
| CN101344453A (en) * | 2008-08-27 | 2009-01-14 | 中国科学院电子学研究所 | Device for measuring high-frequency characteristic of helix traveling wave tube |
| CN201203664Y (en) * | 2008-06-12 | 2009-03-04 | 成都电子机械高等专科学校 | Automatic test equipment for magnetic loop |
-
2011
- 2011-10-13 CN CN2011103102592A patent/CN102508043A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB755834A (en) * | 1953-03-26 | 1956-08-29 | Standard Telephones Cables Ltd | Improvements in or relating to the coupling of a helix in a travelling wave tube or the like to a waveguide |
| US7019535B2 (en) * | 2002-09-16 | 2006-03-28 | Agilent Technologies, Inc. | Method and system for calibrating a measurement device path and for measuring a device under test in the calibrated measurement device path |
| WO2007143018A2 (en) * | 2006-05-31 | 2007-12-13 | The Dow Chemical Company | Microwave applicator equipment for rapid uniform heating of receptive polymer systems |
| CN201203664Y (en) * | 2008-06-12 | 2009-03-04 | 成都电子机械高等专科学校 | Automatic test equipment for magnetic loop |
| CN101344453A (en) * | 2008-08-27 | 2009-01-14 | 中国科学院电子学研究所 | Device for measuring high-frequency characteristic of helix traveling wave tube |
Non-Patent Citations (1)
| Title |
|---|
| 王健: "行波管慢波结构冷测系统的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107005210A (en) * | 2014-11-03 | 2017-08-01 | 宝马股份公司 | Wave filter for the Electro Magnetic Compatibility of the component of the electrically driven that improves vehicle |
| CN106444642A (en) * | 2016-12-15 | 2017-02-22 | 广州中国科学院先进技术研究所 | Slow wave module tube extrusion and detection controlling system and method |
| CN107144739A (en) * | 2017-05-26 | 2017-09-08 | 电子科技大学 | Helical line slow-wave structure dispersion characteristics Auto-Test System and method |
| CN107144739B (en) * | 2017-05-26 | 2019-10-18 | 电子科技大学 | Helical line slow-wave structure dispersion characteristics Auto-Test System and method |
| CN109144525A (en) * | 2017-06-26 | 2019-01-04 | 研祥智能科技股份有限公司 | A kind of software installation method and system of network self-adapting |
| CN113937557A (en) * | 2021-10-22 | 2022-01-14 | 陕西晟思智能测控有限公司 | Automatic butt-joint equipment of portable radio frequency cable |
| CN113937557B (en) * | 2021-10-22 | 2023-02-24 | 陕西晟思智能测控有限公司 | Automatic butt-joint equipment of portable radio frequency cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101344495B (en) | Measuring apparatus for reflection index of wave suction material | |
| CN102508043A (en) | Automatic testing system and method of dispersion characteristics of travelling wave tube slow-wave system | |
| US10553926B2 (en) | Coaxial resonant cavity and system and method for measuring dielectric constant of material | |
| CN201266180Y (en) | Measuring apparatus for reflection index of wave suction material | |
| CN101320061A (en) | Automatic measuring system of antenna phase center | |
| CN104391181B (en) | Microwave dielectric material test high temperature calibrating installation and its calibration method | |
| CN112051453B (en) | Remote testing device and method for dielectric property of high-temperature fluid material | |
| CN103353553A (en) | Dielectric coefficient microwave measuring device and dielectric coefficient microwave measuring system formed by same | |
| CN103353392B (en) | A kind of Automated condtrol torsional bending testing machine | |
| CN110470871B (en) | Single-port multi-state-based material electromagnetic parameter testing device and method | |
| CN1790040A (en) | Cylindrical high Q resonant cavity and microwave dielectric complex permittivity test device | |
| CN105044485A (en) | Online measuring device and method for high-power microwave TMOn mixed mode | |
| CN208398824U (en) | A kind of contactless deep-hole parts linearity testing apparatus | |
| CN102306236B (en) | Multivariable analysis method based on angle measurement | |
| CN101957411A (en) | Method and device for measuring electrical length of radio frequency coaxial cable | |
| CN203455414U (en) | Dielectric coefficient microwave measuring device and dielectric coefficient microwave measuring system formed by same | |
| CN110488099A (en) | A kind of test macro and its application method for millimeter wave antenna near field calibration and width scanning phase | |
| CN2874523Y (en) | Complex dielectric constant detector of cylindrical high Q resonant chamber and microwave electric medium | |
| CN107589313B (en) | Resonant cavity axial electric field measuring device and measuring method | |
| CN106950236B (en) | Device for rapidly positioning sample position by neutron small-angle scattering spectrometer | |
| CN112014694B (en) | System and method for measuring optical signal propagation characteristics of gas insulated switchgear | |
| CN202533430U (en) | Detection device for detecting defects in concrete test specimens | |
| CN206573644U (en) | Probe polarized rotation device and electromagnetic field sampling system | |
| CN105979689B (en) | Optical positioning system suitable for EAST boundary Thomson scattering diagnosis | |
| CN103698700A (en) | Detection device for plane motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |